Cupola.



. PATENTED MAR. 17, 1908. N. BTTING.

GUPOLA APPLICATION FILED SEPT. 24, 1907.

FIG. 4.

WITNESSES: M43341. wax

m: NORRIS PETERS co., wlisnnvurou, u. c.

NEWBOLD ETIING, OF PHILADELPHIA, PENNSYLVANIA.

CUPOLA.

Specification of Letters Patent.

Patented March 17, 1908.

Application filed September 2%:1907. Serial No. 394,317.

To all whom it may concern:

Be it known that I, NEwBoLD ETTING, a citizen of the United States,residing at the city of Philadelphia, in the county of Philadelphia andState of Pennsylvania, have invented certain new and useful Improvementsin Cupolas, of which the following is a specification.

The principal objects of the present invention are, first, to preventthe metal which may accidentally overflow from the cupola through thesafety twyers from accumulating in the wind box and to insure thedelivery of such metal through appropriate openin s in the wind box orits retention in suit able safety twyer boxes from or with which it canbe readily removed; and second, to provide an efficient and reliablecover for carrying or supporting the fusible or destructible closure forthe wind box safety opening in such a way that the opening is normallytightly closed and in such a way that access can be had for removingmetal which may be caught by the safety twyer box or for removing thelatter together with metal that may adhere to it.

In the drawings, Figure 1, is a sectional view illustrating so much ofone-half of a cupola as is necessary for showing the application of thepresent invention. Fig. 2, is a plan view of the swinging ring shown inFig. 1, and Figs. 3 and 4, are respectively a plan and a side view ofthe safety twyer box shown in Fig. 1.

In the drawings 1, is a cupola wind box having a safety twyer 2, and acircular safety outlet 3. These are the usual provisions of a cupola,and if metal should everflow from the interior 3, of the cupola stack byway of the safety twyer 2, the gutter 4, is intended to discharge themetal through the circular opening 3, but it frequently happens thatthis does not occur and that the overflowing metal is deposited in thewind box which produces well understood serious results.

6, is a fusible or destructible plate which is commonly used fornormally closing the outlet opening 3, so as to make the wind box tightand which is intended to be destroyed by overflowing metal to permit ofthe escape of the latter.

7, is a funnel-like box having its smaller cylindrical end arranged inthe wall of the safety outlet 3, and having its other oblong endarranged beneath the safety twyer 2, to catch metal accidentallydischargei'l from the safety twyer. The metal so caught in the safetytwyer box 7, either esca )es therefrom to the outside of the cupola bydestroying the plate 6, or solidifies in the box. In either event themetal does not reach the floor of the wind box, so that the latter isuninjured.

8, is a swinging ring provided with lugs 9 and 10. The lug 9, receives apivot projecting downward from a face formed'on the ring 11, and the lug10, is provided with a hook that engages a screw projecting downwardfrom the face on the ring 11, thus there is provided a tight joint andby swinging the ring 8, access can be readily had to the interior of thesafety twyer box 7, for example, for removing any metal that may havecollected or set in it as by means of a bar or the like. The safetytwyer box 7 may advantageously be made of cast iron so that if it shouldbe filled with metal it can be readily replaced at a small cost.

What I claim is:

1. A cupola wind box having a safety twyer and a safety outlet arrangedthrough its floor and provided with a funnel like box extending abovethe floor of the box and having its smaller end arranged at the outletand its larger end arranged beneath the safety twyer to catch dischargetherefrom, substantially as described.

2. A cupola wind box having in its floor a safety outlet provided with afusible or destruct ible closure, a detaehablefunnel like box projectingupward from the outlet and above the closure and floor, a swingingringcover earrying said closure and adapted to afford access to the box, anda catch for the cover, substantially as described.

In testimony whereof signed my name.

NEWBOLD ETTING.

\Vitnesses:

WM. J. JAoKsoN, FRANK E. FRENCH.

I have hereunto

